/*
** $Id: lstring.h,v 1.61 2015/11/03 15:36:01 roberto Exp $
** String table (keep all strings handled by Lua)
** See Copyright Notice in lua.h
*/

#ifndef lstring_h
#define lstring_h

#include "lgc.h"
#include "lobject.h"
#include "lstate.h"


#define sizelstring(l)  (sizeof(union UTString) + ((l) + 1) * sizeof(char))

#define sizeludata(l)   (sizeof(union UUdata) + (l))
#define sizeudata(u)    sizeludata((u)->len)

#define luaS_newliteral(L, s)   (luaS_newlstr(L, "" s, \
                                 (sizeof(s)/sizeof(char))-1))


/*
** test whether a string is a reserved word
*/
#define isreserved(s)   ((s)->tt == LUA_TSHRSTR && (s)->extra > 0)


/*
** equality for short strings, which are always internalized
*/
#define eqshrstr(a,b)   check_exp((a)->tt == LUA_TSHRSTR, (a) == (b))


LUAI_FUNC unsigned int luaS_hash( const char* str, size_t l,
                                  unsigned int seed );
LUAI_FUNC unsigned int luaS_hashlongstr( TString* ts );
LUAI_FUNC int luaS_eqlngstr( TString* a, TString* b );
LUAI_FUNC void luaS_resize( lua_State* L, int newsize );
LUAI_FUNC void luaS_clearcache( global_State* g );
LUAI_FUNC void luaS_init( lua_State* L );
LUAI_FUNC void luaS_remove( lua_State* L, TString* ts );
LUAI_FUNC Udata* luaS_newudata( lua_State* L, size_t s );
LUAI_FUNC TString* luaS_newlstr( lua_State* L, const char* str, size_t l );
LUAI_FUNC TString* luaS_new( lua_State* L, const char* str );
LUAI_FUNC TString* luaS_createlngstrobj( lua_State* L, size_t l );


#endif
